(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*

This guide provides a more detailed description of the syntax that is supported along with examples.

This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.

Concept Search - What can I type?

For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.

Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.

Publishing Venue

Related People

Abstract

Disclosed is a process that gradually and continually rewrites all of the data stored on a direct access storage device (DASD) within a given period, and repeats the process. This maintains the data at high strength and quality before continuous degradations from track misregistrations (TMR), erasures or shifts, can noticeably degrade the quality.

Country

United States

Language

English (United States)

This text was extracted from an ASCII text file.

This is the abbreviated version, containing approximately
52% of the total text.

Preventative Rewrites

Disclosed is
a process that gradually and continually
rewrites all of the data stored on a direct access storage device
(DASD) within a given period, and repeats the process. This
maintains the data at high strength and quality before continuous
degradations from track misregistrations (TMR), erasures or shifts,
can noticeably degrade the quality.

Some DASD
systems have no process of restoring degraded data.
Some DASD systems rewrite data after it has degraded seriously enough
to have some degree of difficulty in the data recovery process. The
disclosed system restores the data with a rewrite before any
noticeable degradation, thereby preventing more serious degradation
from compounded effects.

Sectors that
are rarely used and never rewritten, that are
adjacent to very actively written sectors, are significantly more
susceptible to the combination of track misregistrations from both
sides than sectors that are more commonly rewritten. Sectors that
are written with very active seeks with short numbers of sectors
transferred are more likely to have residual misregistration than
sectors written within long blocks of data transfer, where the head
is well settled at the correct position.

Although the
above small degradations are not initially
serious, they increase the probability that a single, more
significant problem could cause irreparable damage to some data
sectors. By gradually rewriting all the
data of the file in a
controlled manner, the overall risks of damage to data can be...